Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit d4111cad authored by Veerabhadrarao Badiganti's avatar Veerabhadrarao Badiganti Committed by Sarthak Garg
Browse files

BACKPORT: mmc: sdhci-msm: Set IO pins in low power state during suspend 



Configure SDHC IO pins with low power configuration when the driver
is in suspend state.

Change-Id: Ia099d77289e8c3e2ced8fca718563ab366a4c6f5
Signed-off-by: default avatarVeerabhadrarao Badiganti <vbadigan@codeaurora.org>
Link: https://lore.kernel.org/r/1594213888-2780-2-git-send-email-vbadigan@codeaurora.org


Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
Signed-off-by: default avatarSarthak Garg <sartgarg@codeaurora.org>
parent bd0cd68d

drivers/mmc/host/sdhci-msm.c

+21 −0
Original line number Diff line number Diff line
@@ -14,6 +14,7 @@ 
#include <linux/interconnect.h>

#include <linux/iopoll.h>

#include <linux/regulator/consumer.h>

#include <linux/pinctrl/consumer.h>



#include "sdhci-pltfm.h"

#include "cqhci.h"
@@ -1489,6 +1490,20 @@ static void sdhci_msm_set_uhs_signaling(struct sdhci_host *host, 
		sdhci_msm_hs400(host, &mmc->ios);

}



/* Apply active/sleep pin config based on bus on/off state */

static int sdhci_msm_set_pincfg(struct sdhci_msm_host *msm_host, bool level)

{

	struct platform_device *pdev = msm_host->pdev;

	int ret;



	if (level)

		ret = pinctrl_pm_select_default_state(&pdev->dev);

	else

		ret = pinctrl_pm_select_sleep_state(&pdev->dev);



	return ret;

}



#define MAX_PROP_SIZE 32

static int sdhci_msm_dt_parse_vreg_info(struct device *dev,

		struct sdhci_msm_reg_data **vreg_data, const char *vreg_name)
@@ -2118,6 +2133,9 @@ static void sdhci_msm_handle_pwr_irq(struct sdhci_host *host, int irq) 
		if (!ret)

			ret = sdhci_msm_set_vdd_io_vol(msm_host->pdata,

					VDD_IO_HIGH, 0);

		if (!ret)

			ret = sdhci_msm_set_pincfg(msm_host, true);



		if (ret)

			irq_ack |= CORE_PWRCTL_BUS_FAIL;

		else
@@ -2133,6 +2151,9 @@ static void sdhci_msm_handle_pwr_irq(struct sdhci_host *host, int irq) 
		if (!ret)

			ret = sdhci_msm_set_vdd_io_vol(msm_host->pdata,

					VDD_IO_LOW, 0);

		if (!ret)

			ret = sdhci_msm_set_pincfg(msm_host, false);



		if (ret)

			irq_ack |= CORE_PWRCTL_BUS_FAIL;

		else